Population genetics of the endangered narrowly endemic Island Marble butterfly (Euchloe ausonides insulanus)
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Май 14, 2025
Abstract
The
Island
Marble
butterfly
(
Euchloe
ausonides
insulanus
)
is
an
endangered
species
endemic
to
the
San
Juan
Islands
off
coast
of
Washington
State,
United
States,
and
British
Columbia,
Canada.
was
thought
be
extinct
for
∼90
years
before
it
rediscovered
at
American
Camp,
National
Historical
Park
in
1998.
Here,
we
report
results
first
population
genetic
analyses
,
using
DNA
collected
non-invasively
from
individuals
last
known
stronghold
species.
We
used
extracted
meconium,
larval
exuviae,
natural
mortalities
generate
test
thirteen
new
microsatellite
markers
estimate
diversity,
structure,
kinship.
assembled
annotated
mitochondrial
genomes,
which
were
alongside
museum
specimens
∼100
ago
Vancouver
Island,
other
members
E.
complex,
infer
evolutionary
history
indicated
that
experiences
low
heterozygosity,
a
small
effective
size
(N
e
),
allelic
diversity.
High
levels
inbreeding
found
some
individuals,
but
uneven
across
population.
No
structure
or
partitioning
variation
by
host
plant
detected.
mitogenomes
extant
all
identical
modern
samples
showed
loss
diversity
compared
museums.
Extant
formed
clade
with
identified
multiple
putatively
diagnostic
alleles
differentiate
subspecies.
Based
on
these
results,
outline
considerations
management
monitoring.
Язык: Английский
Evaluating the use of non‐invasive hair sampling and ddRAD to characterize populations of endangered species: Application to a peripheral population of the European mink
Ecology and Evolution,
Год журнала:
2023,
Номер
13(9)
Опубликована: Сен. 1, 2023
The
application
of
next-generation
sequencing
(NGS)
to
non-invasive
samples
is
one
the
most
promising
methods
in
conservation
genomics,
but
these
types
present
significant
challenges
for
NGS.
European
mink
(
Язык: Английский
Evaluating streamflow and temperature effects on Bull Trout migration and survival with linear spatial capture–recapture models
Transactions of the American Fisheries Society,
Год журнала:
2024,
Номер
153(3), С. 326 - 346
Опубликована: Апрель 11, 2024
Abstract
Objective
In
the
U.S.
Pacific
Northwest,
climate
change
is
increasing
air
temperatures,
decreasing
warm
season
(April–September)
streamflow,
and
cool
(October–March)
streamflow.
Warmer
water
temperatures
may
alter
conditions
for
migratory
coldwater
fishes
like
Bull
Trout
Salvelinus
confluentus
.
Consequently,
an
understanding
of
migration
survival
critical
species
conservation
restoration.
Salmon
River
basin,
Idaho,
1992
1993
transpired
to
be
two
most
opposing
extreme
years
among
past
three
decades
temperature
These
extremes
provided
a
unique
opportunity
retrospectively
compare
under
potential
scenarios.
Methods
We
evaluated
prespawning
postspawning
migrations
fluvial
that
were
radio‐tagged
tracked
from
1994.
used
Cormack–Jolly–Seber
linear
spatial
capture–recapture
model
simultaneously
prespawn
(
n
=
58)
postspawn
23)
weeks
river
reaches
with
temperature,
habitat
covariates.
Result
Most
individual
similar
tagged
fish,
whereas
fish
adopted
multiple
overwintering
strategies.
Movements
larger
when
(1)
weekly
average
daily
maximum
streamflow
increased
(2)
increased.
The
estimated
at
least
52%
spawners
survived
spawning,
mean
apparent
was
higher
in
low‐streamflow
year
(1992)
than
more
variable
(1993).
Survival
1992–1994
during
38‐week
period
intermediate
period.
Detections
generally
sites
complex
habitats,
less
large
woody
debris,
fewer
undercut
banks.
Conclusion
found
life
stage
can
represent
shorter
time
frame
(14–18
weeks)
mortality
compared
longer
(38
weeks).
lower
variability,
indicating
expected
future
changes
adversely
affect
Trout.
Язык: Английский
Assessment of predation on small semi-aquatic mammals by the Eurasian otter through genetic analysis of spraints
Mammalian Biology,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 8, 2024
Abstract
Small
semi-aquatic
mammals
play
a
critical
role
in
the
river
ecosystem
and
can
be
used
as
bioindicators
of
environmental
health.
Many
populations
these
species
are
threatened
by
multiple
factors,
mainly
habitat
degradation,
but
also
other
causes
such
predation.
Among
potential
predators,
Eurasian
otter
(
Lutra
lutra
)
is
known
to
prey
on
some
species,
significance
impact
their
remains
uncertain.
To
study
effect
small
mammal
community,
we
collected
feces
containing
hair
from
different
rivers
Iberian
Peninsula
genetic
methods
identify
predator
species.
We
identified
83
spraints
25
desmans
Galemys
pyrenaicus
),
21
water
shrews
Neomys
anomalus
28
Southern
voles
Arvicola
sapidus
).
These
were
recorded
watersheds
throughout
area
over
long
period
time,
indicating
widespread
presence
diet.
findings
particular
concern
for
desman,
given
its
endangered
status.
Our
results
highlight
need
specifically
investigate
less
abundant
ecologically
significant
groups
consumed
otter,
mammals,
better
understand
influence
this
riparian
ecosystem.
In
addition,
future
efforts
should
address
analysis
carnivores
assess
predation
viability
populations.
Язык: Английский